What are the best practices for passing multiple variables in PHP without using sessions?

When passing multiple variables in PHP without using sessions, one common approach is to encode the variables into a query string and pass them through the URL. This can be achieved by using the http_build_query() function to convert an array of variables into a URL-encoded query string. This method is useful for passing data between different pages or scripts without relying on sessions.

// Define the variables to be passed
$var1 = 'value1';
$var2 = 'value2';
$var3 = 'value3';

// Encode the variables into a query string
$queryString = http_build_query(array('var1' => $var1, 'var2' => $var2, 'var3' => $var3));

// Redirect to another page with the query string
header("Location: another_page.php?" . $queryString);
exit;